I thought that a head worn lights may be a good topic to review some products out there.
They seem to range from some pretty cheap models however there are lot of really expensive ones as well.
I purchased a Led Lenser H14.2, probably a bit over a year ago.
(Youtube review: https://www.youtube.com/watch?v=DVxLLW8FfAY)
I think it was on special and while it was not cheap (CIRCA $AUD170), far from it, for a torch, it seemed like a better value than some I had seen in a few fun stores. The battery compartment is worn on the head as well, which I thought was a better idea than some of the remote batteries. Less cords to get tangled - a simpler solution. What really sold me was the lens.
It is comfortable to wear and is balanced, having the batteries at the rear and the light at the front, it doesn’t slip forward or backwards. It has a lot of features but the basic one of being a light is easily turned on by a press of a button at the front. The Lens is able to be moved up or down in 5 well defined positions. It enables the light to be directed forward if you are on the move or if you are working the light can be directed down at your hands. The light can be really easily spread from a wide angle beam to a focused spot beam by moving the outside casing either quickly just forward and backwards or slowly with a twist. It is not tight nor sloppy and maintains the setting you have chosen. The light operates on 4 AA cells either alkaline or rechargeable. It can also take two of the larger lithium batteries and will also take external battery packs via a usb.
So as a reviewer, I give it a big thumbs up.